Gas unit to kWh calculator
Convert gas units into kWh
Our calculator converts gas meter readings from cubic meters (m³) or cubic feet (ft³) to kilowatt-hours (kWh). Calorific value typically ranges from 37.5 to 43.0 MJ/m³ and can be found on your energy bill.
Your gas reading in kWh is:
0 kWh
Convert gas units to kWh manually
Prefer to calculate yourself? Here is how to convert your gas units to kWh. If you are unsure how to read your gas meter, check our guide here.
How to convert imperial gas readings to kWh
- Take a reading from your gas meter
- To calculate your gas consumption, subtract the old meter reading from the new reading
- Convert your reading using the imperial formula below:
Cubic meters (m³) used x calorific value x Correction factor (1.02264) ÷ kWh conversion factor (3.6) = kWh
How to convert imperial gas readings to kWh
- Take a reading from your gas meter
- To calculate your gas consumption, subtract the old meter reading from the new reading
- Convert your reading using the metric formula below:
Cubic feet (ft3) used x metric conversion factor (0.0283) x calorific value x correction factor (1.02264) ÷ kWh conversion factor (3.6) = kWh
Learn more about energy readings & bill calculation here at the government’s gas meter readings guide.
Moving soon?
Save 7 hours of utility admin, and up to £397 on bills with exclusive offers.
Questions about energy bills
How is my energy bill calculated?
Your energy bill is made up of a few different costs: unit rates, standing charges and taxes (e.g. VAT). These are used together to calculate your bill.
Is my energy meter metric or imperial?
A metric meter will measure in m³ and have four digits before the decimal point. An imperial meter will measure in f³ and have six digits before the decimal point.
What are unit rates?
Unit rates are the price you will pay for each kWh (Kilowatt-hour) of energy you use, referred to as a unit. Your energy consumption is measured by your meter.
What are energy standing charges?
Energy standing charges are fixed daily fees you pay for your mains electricity and gas connection. The amount you pay is determined by your energy tariff.
The standing charges pay for access to the electricity and gas network. The funds are used to maintain and repair infrastructure, as well as to cover the operational costs of your energy distributor.
What is the calorific value shown on my energy bill?
The calorific value measures how much energy your gas generates. It should vary between 37.5MJ/m³ and 43.0MJ/m³, with 40.0 being an average.
The average calorific value of the gas you received this month can be found on your energy bill.
The unit, MJ/m³ means Mega Joules of energy produced per m³ of gas supplied.
What is the Energy Price Cap?
The energy price cap does what it says on the tin – it’s a cap or limit on the amount that energy suppliers in the UK can charge for domestic electricity and gas. Although it’s often quoted as a monthly or annual cost, the cap is actually on the per-unit cost of energy. Your own bill is still based on usage. Average household usage for different-sized homes is used to estimate what individual bills will be.
The cap applies to all Standard Variable Tariffs in the UK. It doesn’t apply to you if you are on a fixed-rate tariff. Standard variable tariffs used to be the most expensive way to get your energy, but the energy crisis and price cap now mean that these are the best value tariffs available.
What is the latest update on the price cap?
Ofgem has announced a 6.4% increase to the energy price cap starting 1 April 2025, raising the average annual household energy bill to £1,849 – up £111 from current rates.
This marks the third consecutive quarterly increase, driven primarily by rising wholesale gas prices across Europe and inflation.
Find a great value tariff
Save on energy bills with a great value fixed tariff. Sign up and get recommendations from our team of Connections Experts.
© Please Connect Me
Our Services
Connectivity
Energy
Broadband
TV
Mobile
Insurance
FX
Cleaning
Company
About us
Testimonials
Careers
Help
Blog
Contact support
Cookies settings
